20534525 has 24 divisors (see below), whose sum is σ = 28123200. Its totient is φ = 14748800.

The previous prime is 20534489. The next prime is 20534531. The reversal of 20534525 is 52543502.

It is not a de Polignac number, because 20534525 - 2⁶ = 20534461 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20534494 and 20534503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24056 + ... + 24894.

It is an arithmetic number, because the mean of its divisors is an integer number (1171800).

Almost surely, 2^20534525 is an apocalyptic number.

20534525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20534525 is a deficient number, since it is larger than the sum of its proper divisors (7588675).

20534525 is a wasteful number, since it uses less digits than its factorization.

20534525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949 (or 944 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 20534525 is about 4531.5036135923. The cubic root of 20534525 is about 273.8387395356.

The spelling of 20534525 in words is "twenty million, five hundred thirty-four thousand, five hundred twenty-five".